As you all know the need for power never fails to grow. Im looking to make more power with my n/a. Currently i have a k&n drop-in and a gutted catalytic and a high performance clutch. I dont really wanna go full exhaust on this car because the plan is to eventually get a TII that someone built or build one up myself. I might decide to put on a header but that is it for exhaust on this one. I thought about going R-tek but im not sure its going to do much for me. I also plan on rebuilding this engine when it needs it and going large street port or half bridge. So anyone have any suggestions as to what i can do with it to make some more HP?

 

In general, anything you do to help the engine breathe will help the N/A. make power in the upper rpm range. They respond well to exhaust-larger pipes, lower restriction muffler and header. Some or all of the above will help.

Intake-the short intake cone filter is considered a 'hot air intake' by most on this forum. I don't think it (the warmer air) is as bad as the living restriction from the stock intake. I did some temp testing with my intake couple of years ago. Here is the post.


https://www.rx7club.com/showpost.php...0&postcount=17

To summarize, the stock restriction hurts your top end. If you go to a cone intake, you get better top end. However, when you are not moving, your intake is sucking hot air (If this were a tII, it's not acceptable). When you get moving, the movement of the car reduces the hot air to an acceptable level. Lots of threads are around about cold air intakes, but our cars are not really cut out for doing this easily.

Then, there is always nitrous...

Aaron is probably going to close your thread, so search for 'Beefy N/A' for lots of info.

 

n/a's are somewhat limited when it comes to making power passed 200hp or even getting close to it.. porting gets you closer but still you'll have to run a t2 drivetrain to withstand the more power going thru. you mentioned buying or converting into a t2...
if money is not a problem go ahead upgrade the n/a but what if you waited and saved the money to buy a t2..

 

http://www.cardomain.com/ride/2897958

 

the most hp i have seen with my very own eyes on a dyno on a n/a , was 159 whp

CAI intake, racing beat full dual exhaust on stock ports, you are very limited here because the factory ecu/injectors

 

210 hp on what kind of ports?

and 170 mph brahhh come on do you even believe that lie

And how the hell did you get that s4 down to 1900 lbs

oh and i have a buddy with a 13b bridgeport , holley 650 cfm, open headers and he did 185whp

 

It doesnt make any sense to throw money at the na motor for temporary mods when you are ultimately going turbo. It would actually make more sense to buy the t2 engine, swap it in and upgrade the drivetrain later. That way you dont run out of money chasing small amounts of power with high dollar amounts. Another option is boosting the na motor. Japan2la machines t2lims to match up to the 6 port motor. Makes you able to swap t2 turbo set up tbi etc to na engine. Just another option.

john ny

 

i dont plan on making the vert a turbo vert. I just want a somewhat quick Daily Driver. I am going to be buying a TII car eventually and i want that to be the "race car" as i call it. It just going to be something that is driven on weekends in the summer and to shows and stuff like that. That is going to be my all out power car.

 

I'm pretty sure you can go full exhaust to replace the stock one without it being a waste of money because the NA y-pipe and mufflers are interchangeable with the Turbo. Headers, imo, would be a waste of $ if you plan on going turbo because you can't use the headers on a T2.

 

again im going to have 2 cars not just one. so the header will be on the vert permanently along with all other parts

 

http://khturbo.net/rmtz24/RMTZ24.html)


http://www.rx8club.com/showthread.ph...te+mount+turbo

 

I'm willing to bet money all those numbers are made up. Hell, he doesn't even know how a rear diffuser works.

 

those number are made up because nobody on cardomain knows anything about rx7s, its 167 hp on stock ports and some where around 2200 i havnt had it weighed in a while and ive never seen top speed. im sick of turbo queers throwin n/a under the bus!!!

 

took about 2 grand but ive got a fast, reliable, daily drivable n/a

 

There's a reason for that, you're making less hp than a stock turbo car.

 

get a header, clean your 5/6 port actuators and plumb the vacuum hose to your ACV exhaust hose if you were smart and kept the airpump after ruining your cat. then add a SAFC and you can probably pull 15hp out of that setup.

 

its not really ready yet but i will race anyone, i dont really care wat you or anyone else thinks about my car all i care is that i love my car and my dad and i built it from the ground up. as for the turbo queers thing i was just frustrated when i wrote that i have nothing against any rx7 and rotary enthusiast, i dont care wat you think about me either, we can continue this if you want but i really dont see any reason to, i was orignaly posting to show how to make a little more n/a power but the ultimate thing behind n/a power is porting.

 

Quit backpeddling bitch. You ran your mouth, now deal with the consequences.

 

Really, so WHAT you're saying is that it doesn't matter WHAT you do otherwise, as long as you port the damn thing you'll get more power? Even if all stock equipment is left on including the iron bathtub they call an exhaust mani?

Yeah, I care about how mine functions too but you know WHAT, I still took the time to do all the body work and I certainly wouldn't post pics of some multi-colored chrome-rimed POS regardless of WHAT it had under the hood.

I want in on this action, seeing as how I must be double the turbo queer as just about any other FC owner

 

Well if you can make a sorta "scoop" and encose it to this part, that'll make the stock intake sorta like a cold air.

http://pubdelivery.filesend.it/thumb...c992297465.png

I didn't do that yet and well, we only ran it one day without the silencer in (Kills performance) but when it was removed the fc was quite zippy.

Get a corksport catback + mangnaflow muffler to replace the cat, and maybe a header. that'll help alot

btw I read gutting the cats does worse.... go to a exhaust shop and get alil straight pipe made or put out alil dough and do the above. I'm getting the mangnaflow muffler to tone down the noise a bit so i dont gotta run the silencer anymore

 

You pretty much have everything that can be done already besides tuning. You can get maybe 6-7HP more with mufflers. The biggest gains from headers come from removing the cat. Check out Racing Beat's comment on their website: they tell you to save money and get their cat eliminating downpipe instead, keeping the stock manifold, if you have a fuel injected vehicle. Their header only helps on carbeurated rotaries.

A cold air intake and Royal Purple oil might give you 3 HP each. That cold air is compared to the stock cold air w/o a cone; right now your intake is at -3ish HP because you added ~2-3 HP from the cone and lost 6 HP from your hot air intake. Most everything else like pipework is worth less than 1 HP.

Also verify that your auxillary ports are functional using the guide at www.aaroncake.net, especially since you gutted the cat. They're good for 25HP. Definately worth checking into considering that your gains thus far are probably around 15 HP.

 

Just to re-iterate, N/A 13B motors are pretty lame. Sure you can pull 200hp out of one, but good luck driving it on a regular basis, or having a passenger in your car that doesn't have to yell for you to hear them. Get a faster car, or a turbo motor.

 

Blah blah blah, stop feeding the trolls on this forum. Blah blah.

To the OP- You need to figure out what you want to do with your car. Your first post was so confusing on what you want to do I got a headache. You want to do this, and then that.

 

This thread isn't closed yet????

Take it from experience, NA motors are loud when bumped up in the power spectrum.

 

Silly boy racer moderhater - what do you know with your 180 RWHP N/A FC?